THE INVISIBLE ARMY IN THE WORLD WAR (SECRET WAR AGENCY) Dr. A. Pekka ex. Special duty officer at the headquarters of the Russian commander-in-chief. 1938 Riga, D. Zeltiņa, ep. D. Golt, ed Satisfied condition
Catechism of Socialism Published by Latvian Social Democracy "Cīńa", Riga, 1919.
Fricis Roziņš, also known as Fricis Roziņš-Āzis (1870-1919), was a Latvian Marxist and revolutionary, one of the founders of the Latvian Communist Party, a publisher of social-democratic literature and a columnist. Chairman of Iskolat (1918), Commissar of Agriculture of LSPR (1919).